If you liked that British accent James Marsters had during his time on "Buffy the Vampire Slayer" and "Torchwood," get used to the real Marsters. That is, the actor willing to wrap his arm in (prop) barbed wire and show his full allegiance to the one true god.

Marsters makes his debut on Syfy's "Caprica" Friday in an episode that will have you talking until next week.

"Know Thy Enemy" introduces Tomas Vergis, who demands a meeting with Daniel Graystone (Eric Stoltz) following the pilot episode theft of a chip that makes the U-87 Cylon work.

Vergis whirls up a publicity storm that steals the heart of the Caprican public, and surprisingly serves up a friendly offer to Daniel that could save Graystone Industries. But there's a catch to his proposal that could haunt Daniel for years to come.

Sister Clarice (Polly Walker), panicked that off-world STO leadership has been backing a rogue named Barnabas Greeley (James Marsters), steps up her plans to acquire Zoe Graystone's (Alessandra Torresani) avatar program ... and may find her answer through befriending Amanda Graystone (Paula Malcomson).

Meanwhile, wanting to fulfill her own promise to Zoe, Lacy Rand (Magda Apanowicz) goes with Keon (Liam Sproule) to meet Barnabas, opening herself up to a new world of danger.

"Caprica" airs Friday at 9 p.m. on Syfy.